Copyright (c), Data Geekery GmbH, contact@datageekery.com
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
/**
 * Copyright (c), Data Geekery GmbH, contact@datageekery.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jooq.lambda.function;

import java.util.function.Supplier;

import org.jooq.lambda.tuple.Tuple0;

A function with 0 arguments.
Author:
Lukas Eder/**
 * A function with 0 arguments.
 *
 * @author Lukas Eder
 */
@FunctionalInterface
public interface Function0<R> extends Supplier<R> {

    
Apply this function to the arguments.
/**
     * Apply this function to the arguments.
     */
    default R apply() {
        return get();
    }

    
Apply this function to the arguments.
Params:
args – The arguments as a tuple./**
     * Apply this function to the arguments.
     *
     * @param args The arguments as a tuple.
     */
    default R apply(Tuple0 args) {
        return get();
    }

    
Apply this function to the arguments.
/**
     * Apply this function to the arguments.
     */
    @Override
    R get();

    
Convert this function to a Supplier /**
     * Convert this function to a {@link java.util.function.Supplier}
     */
    default Supplier<R> toSupplier() {
        return this::apply;
    }

    
Convert to this function from a Supplier /**
     * Convert to this function from a {@link java.util.function.Supplier}
     */
    static <R> Function0<R> from(Supplier<R> supplier) {
        return supplier::get;
    }

}